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<div class="title">FastFourierTransform.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#ifndef INCLUDE_FASTTOURIERTRANSFORM</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define INCLUDE_FASTTOURIERTRANSFORM</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">/************************************************************************/</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">/* CFastFourierTransform                                                */</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">/************************************************************************/</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#define PI_2 6.283185F</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define PI   3.1415925F</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"><a class="line" href="class_c_fast_fourier_transform.html">   14</a></span>&#160;<span class="keyword">class </span><a class="code" href="class_c_fast_fourier_transform.html">CFastFourierTransform</a></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;{</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;    <a class="code" href="class_c_fast_fourier_transform.html">CFastFourierTransform</a>(<span class="keywordtype">int</span> pSampleSize);</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;    ~<a class="code" href="class_c_fast_fourier_transform.html">CFastFourierTransform</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    <span class="keywordtype">float</span>* Calculate(<span class="keywordtype">float</span>* pSample, <span class="keywordtype">size_t</span> pSampleSize);</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    <span class="keywordtype">float</span>* xre;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    <span class="keywordtype">float</span>* xim;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    <span class="keywordtype">float</span>* mag;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    <span class="keywordtype">float</span>* fftSin;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    <span class="keywordtype">float</span>* fftCos;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    <span class="keywordtype">int</span>* fftBr;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keywordtype">int</span> ss;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    <span class="keywordtype">int</span> ss2;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="keywordtype">int</span> nu;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <span class="keywordtype">int</span> nu1;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    <span class="keywordtype">int</span> BitRev(<span class="keywordtype">int</span> j, <span class="keywordtype">int</span> nu);</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keywordtype">void</span> PrepareFFTTables();</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;};</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="class_c_fast_fourier_transform_html"><div class="ttname"><a href="class_c_fast_fourier_transform.html">CFastFourierTransform</a></div><div class="ttdef"><b>Definition:</b> FastFourierTransform.h:14</div></div>
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